evaluating function of persian search engines on the web using correspondence analysis

Evaluating Web Search Engines Using Clickthrough Data

The web is a highly dynamic environment: documents disappear or become outdated, new documents appear, the query distribution changes. In order to keep up, search algorithms must be continuously tuned and re-tuned. Each iteratively tuned algorithm needs to be evaluated against the current web corpus. But since the web is so frequently changing, relevance judgments acquired at one point in time ...

On the Instability of Web Search Engines

The output of major WWW search engines was analyzed and the results led to some surprising observations about their stability. Twentyfive queries were issued repeatedly to the engines and the results were compared. After one month, the top ten results returned by eight out of nine engines had changed by more than fifty percent. Furthermore, five out of the nine engines returned over a third of ...

On the Instability of Web Search Engines

content analysis of l1 and l2 writing textbooks and the perception analysis of university professors on the influence of english writing expertise on the persian in an efl context

the importance of writing as a complex skill in applied linguistics has drawn the attention of many researchers to evaluate textbooks in order to help learners gain self-sufficiency and autonomy in the field of language use and communication. investigations have shown that developments in textbooks evaluation can promote the quality of pedagogies and consequently the learning. this study attemp...

Positioning in Cyberspace: Evaluating Telecom Web Sites Using Correspondence Analysis

The growth of presence in the marketspace of the Web has been exponential, both in general and within specific industries. While the academic literature on the phenomena is still in its infancy, there exists a pressing need to establish methodologies to evaluate and map Web sites within and between industries. With the exception of a few notable papers little or no theoretical, descriptive, or ...

the impact of using inspirational quotes on abstract vocabulary recall

the present study is an attempt to investigate the potential impact of inspirational quotes on improving english abstract vocabulary recall. to achieve this goal, a multiple choice language proficiency test of 60 items including vocabulary and grammar component was administered to a sample of 63 second-semester male and female students whose age ranged between 17 to 22 and they were studying en...